Home / 458,186.36-687,003.32-205,421.13

Finding the Fourth Proportional to 458,186.36, 687,003.32 and 205,421.13

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Solution

The fourth proportional to 458,186.36, 687,003.32 and 205,421.13 is: 308,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,186.36 : 687,003.32 = 205,421.13 : x
  2. Step 2: Convert to fraction form
    458,186.36/687,003.32 = 205,421.13/x
  3. Step 3: Cross multiply
    458,186.36x = 687,003.32 × 205,421.13
  4. Step 4: Simplify right side
    458,186.36x = 141,124,998,821.70
  5. Step 5: Solve for x
    x = 141,124,998,821.70/458,186.36
  6. Step 6: Final answer
    x = 308,007.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.